Exam 1: Introduction

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S. a series of questions to find out their view on the U.S. economy. -Referring to Table 1-2, the possible responses to the question "How many people in your household are unemployed currently?" are values from a

The brand of TV one owns is an example of a numerical variable.

Which of the following is a continuous quantitative (numerical)variable?

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S. a series of questions to find out their view on the U.S. economy. -Referring to Table 1-2, the population of interest is

The brand of TV one owns is an example of an ordinal scaled variable.

A statistic is usually unobservable while a parameter is usually observable.

The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week. Her assistant took a random sample of 250 students and computed the portion of students in the sample who visited campus bars on the weekend before the final exam. The portion of all students at her university who visited campus bars on the weekend before the final exam week is an example of

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S. a series of questions to find out their view on the U.S. economy. -Referring to Table 1-2, the possible responses to the question "Are you 1. Currently employed, 2. Unemployed but actively looking for job, 3. Unemployed and quit looking for job?" result in

A personal computer user survey was conducted. Hours of personal computer use per week is an example of a ________ numerical variable

The Human Resources director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package. The 500 employees who will participate in this study constitute the ________.

Most analysts focus on the cost of tuition as the way to measure the cost of a college education. But incidentals, such as textbook costs, are rarely considered. A researcher at Drummand University wishes to estimate the textbook costs of first-year students at Drummand. To do so, she monitored the textbook cost of 250 first-year students and found that their average textbook cost was $600 per semester. Identify the sample in the study.

A personal computer user survey was conducted. Computer brand primarily used is an example of a ________ variable.

The Quality Assurance Department of a large urban hospital is attempting to monitor and evaluate patient satisfaction with hospital services. Prior to discharge, a random sample of patients is asked to fill out a questionnaire to rate such services as medical care, nursing, therapy, laboratory, food, and cleaning. The Quality Assurance Department prepares weekly reports that are presented at the Board of Directors meetings and extraordinary/atypical ratings are easy to flag. Values computed from the sample results each week are called ________.

TABLE 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a DVD player made by the company over the past 12 months are satisfied with their products. -Referring to Table 1-1, the possible responses to the question "How much time do you use the DVD player every week on the average?" are values from a

The Dean of Students conducted a survey on campus. Number of clubs, groups, teams, and organizations affiliated with on campus is an example of a ________ numerical variable.

TABLE 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S. a series of questions to find out their view on the U.S. economy. -Referring to Table 1-2, the possible responses to the question "In which year do you think the last recession in the U.S. started?" result in

A personal computer user survey was conducted. Number of personal computers owned is an example of a ________ numerical variable.

The oranges grown in corporate farms in an agricultural state were damaged by some unknown fungi a few years ago. Suppose the manager of a large farm wanted to study the impact of the fungi on the orange crops on a daily basis over a 6-week period. On each day a random sample of orange trees was selected from within a random sample of acres. The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated. The two main measures calculated each day (i.e., average number of damaged oranges per tree and proportion of trees having damaged oranges)may be used on a daily basis to estimate the respective true population ________.

The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of

Which of the following is most likely a population as opposed to a sample?